Abotanist conducted an experiment to test the effect of light on plants. fifty plants of a flowering species were grown for 60 days under different lengths of artificial daylight. flowers could be white or pink based on the parent plant genes. the amount of water and fertilizer provided was constant. at the end of the experiment, the size of each leaf for all plants is measured. what is the dependent variable in this experiment?

Awoman whose sister tested positive for a specific mutation in the brca1 gene, which increases the risk for breast and ovarian cancer, is found not to have that mutation but does have a mutation of unknown significance near the known mutation site. how should this woman be counseled? select one: a. she should be informed that her risk for breast cancer is greater than the general population but not as great as her sister’s risk. b. she should be informed that because she does not have the mutation, her risk for breast cancer is not greater than that of the general population. c. she should be informed of her gene mutation status and be presented with all the available prophylaxis options and reconstruction options. d. she should be informed that she does not have the specific mutation but that because another mutation is present she should be vigilant about screening

Which of the following situations describes a adaptation for a mole? question 2 options: a mole is blind and cannot see underground. a mole is bright and attracts the attention of predator birds. a mole has a sensitive sense of smell to it find food underground.

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.